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Accrued Expenses - Schedule of Accrued Expenses (Detail) - USD ($)
$ in Thousands
Dec. 31, 2015
Jun. 30, 2015
Payables and Accruals [Abstract]    
Clinical trial costs $ 2,579 $ 1,424
Personnel costs 617 735
Professional fees 342 384
Other 14 28
Accrued expenses $ 3,552 $ 2,571